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26 Cards in this Set

  • Front
  • Back
types of nuclear medicine
routine
Single Photon Emission Computed Tomography
Positron Emission Tomography
Molecular imaging
energy source for nuclear medicine
gamma radiation, positrons
risks associated
ionizing radiation
reaction to pharmaceuticals
nuclear medicine provides
physiology and function information
reasons to request
evaluate metastasis, plumbing of a structure, evaluate organ function, localize pathology, aid in diagnosis, treatment
contraindications to nuclear medicine
allergy
pregnancy
lactation
intefering factors
medication
movement
uncooperative patient
administer nuclear medicine by...
intravenous
inhaled
oral
ingredients for nuclear medicine
radionuclide
pharmaceutical
increased uptake = hot spots
black / dark on black & white
red / white on color
decreased uptake = cold spots
white / light on B&W
blue / black on color
positron emission tomography used in...
heart, brain, cancer (staging)
PET = new gold standard for assessment of cancer...
diagnosis, staging, follow-up, however expensive
benefits of PET technology
provides physiologic info
location of disease
extent of disease
study interference for PET scans
elevated glucose
caffeine, alcohol, tobacco
physical exertion
anxiety
radiolucent
can see through it, spot where x-rays pass through
radioopaque
can see it, bright spot, x-rays bounced back
fusion imaging
combines physiologic data with anatomic pictures
types of fusion
PET with:
CAT
MRI
types of nuclear scanning
brain scan (stage cancer)
gallbladder scan (cholecystitis)
gastric emptying scan
GI bleeding scan
lung scan (pulm embolism)
cardiac scan
renal scan
thyroid scan
scrotal scan
why is technetium-99m used?
half life is 6 hours
emits low levels of gamma rays
other commonly used radionuclides are
gallium, thallium, iodine
what is a radiopharmaceutical
radionuclides are combined with a transport molecule
how does nuclear imaging work?
radioisotope concentrates in desired area, emits gamma rays, scintillation scanner detects and records emission of gamma rays
scanning can either be
static or dynamic (SPECT or PET)
risk associated with nuclear scanning is
much less than x-rays